MR. MATEUSZ ADAM MARCINOWSKI LMHC
NPI 1346532744
Counselor - Mental Health in Westfield, MA
About Mr. Mateusz Adam Marcinowski Lmhc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. MATEUSZ ADAM MARCINOWSKI LMHC (NPI 1346532744) is an individual mental health provider in Westfield, Massachusetts and active in the NPI registry since May 2011. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mr. Mateusz Adam Marcinowski Lmhc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Mateusz Marcinowski reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Amherst, MA 01002
- Reassigned Medicare billing, Massachusetts enrollment
- 41 clinicians in this Medicare group
Miami, FL 33130
- Reassigned Medicare billing, Massachusetts enrollment
- 522 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WESTFIELD, MA 01085
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mateusz Marcinowski's NPI number?
The NPI number for Mateusz Marcinowski is 1346532744. It was assigned to this individual provider in the NPPES registry on May 4, 2011.
Where is Mateusz Marcinowski located?
Mateusz Marcinowski practices at 28 Main St Unit 2, Westfield, MA 01085. The listed phone number is (413) 853-9104.
What is Mateusz Marcinowski's specialty?
The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.
Is Mateusz Marcinowski enrolled in Medicare?
Yes. Mateusz Marcinowski is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mateusz Marcinowski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mateusz Marcinowski reassigns Medicare benefits to 2 organizations: Amherst Psychotherapy Practice PC (Amherst, MA) and Grow Healthcare Group PA (Miami, FL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mateusz Marcinowski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mateusz Marcinowski accept?
Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Mateusz Marcinowski as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Mateusz Marcinowski was last updated on July 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mr. Mateusz Adam Marcinowski, LMHC · NPI 1346532744
Mental Health provider in Westfield, Massachusetts. Individual provider, active in the CMS NPPES registry since May 4, 2011.
## Identity
- **NPI:** 1346532744 (Entity type: Individual)
- **Enumerated:** May 4, 2011
- **Primary specialty:** Counselor - Mental Health · taxonomy 101YM0800X
- **Sole proprietor:** No
## Practice location
- **Address:** 28 MAIN ST UNIT 2, Westfield, MA 01085-3121
- **Phone:** (413) 853-9104
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Amherst Psychotherapy Practice PC (NPI 1134760812, Amherst, MA); Grow Healthcare Group PA (NPI 1245845932, Miami, FL) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 4, 2025
- **Other identifiers:** Medicaid 1300881 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1346532744) · Data from the CMS NPPES public registry.